Video image amplification method and system based on MIPI protocol

Abstract

The invention discloses a video image amplification method based on an MIPI protocol. The video image amplification method comprises following steps of: storing channel data outputted by an MIPI datachannel to a buffer; obtaining a scale factor and pixel data in the buffer, and calculating new pixel data after scaling in the following manner: P_NEW(i)=P_SRC([i*N / M])*(1-Y)+P_SRC([i*N / M]+1)*Y; wherein P_NEW(i) represents ith new pixel data; N / M represents the scale factor; [i*N / M] represents an integer part of i*N / M; Y represents a proper fraction part of (i*N / M); P_SRC([i*N / M]) represents dataof a [i*N / M]th pixel in the buffer; and P_SRC([i*N / M]+1) represents data of a ([i*N / M]+1)th pixel in the buffer. According to the invention, the number of clocks is reduced, too many clock domain crossing processes are not needed, the system resources are saved, power consumption is reduced, and the system stability is improved. The invention also discloses a video image amplification system based on the MIPI protocol.

Description

technical field [0001] The invention relates to the field of image compression, in particular to a method and system for enlarging video images based on the MIPI protocol. Background technique [0002] The Mobile Industry Processor Interface (MIPI) protocol improves the consistency of the application processor interface, accelerates the provision of mobile devices to users, and promotes the reuse and compatibility of mobile devices, so it is widely used . Most of the mobile device video data is also transmitted through the MIPI protocol. Since the resolutions of the display screens of different mobile devices are different, it is necessary to scale the image data of the video source and move it to match the resolution of the back-end screen. Therefore, , it involves how to extract the display data transmitted by MIPI for scaling. [0003] In the prior art, MIPI includes four data channels through which the serial video data transmitted by the mobile device is received, and...

AI Technical Summary

Problems solved by technology

Generally, when extracting effective RGB data from parallel video data, the method adopted is to first write the parallel video data into the buffer (BUFFER) with a byte clock (referred to as "BYTE CLOCK"), and then use a pixel clock (abbreviated as "BYTE CLOCK") to write the parallel video data into the buffer (BUFFER). PIXEL CLOCK") extracts valid RGB data from the buffer (BUFFER), which involves processing issues across clock domains, and the pixel clock may be faster than the byte clock, which will increase power consumption and reduce system stability. sex

When extracting effective RGB data for scaling processing, because of the reduction of pixels, it is necessary to use a scaling clock (referred to as "Scaler CLOCK") slower than the pixel clock to read the data for calculation, which will cause the entire The system has too many clocks, which further reduces the stability of the system

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